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A modeling framework to assess water and nitrate balances in the Western Bug river basin, Ukraine

机译：评估乌克兰西布格河流域水和硝酸盐平衡的建模框架

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The objective of this study was to assess the utility of theeco-hydrological SWAT model (Soil and Water Assessment Tool, Arnold et al.,1998) for representing water balance and nitrate fluxes given limited inputand calibration data. The investigated catchment is located in WesternUkraine with an area of approximately 2616 km2. Land use is currentlydominated by agriculture with significant areas of pasture, and hasundergone a high degree of changes in land-use and agricultural practicesince the end of the Soviet Union. Model application produced a fitted waterbalance (calibration: R2 = 0.52, NS = 0.46; validation: R2 = 0.47,NS = 0.51) and plausible ranges and dynamics of nitrate in stream loadings.Groundwater parameters were found to be highly sensitive. The resultsindicate that SWAT is an appropriate tool for water resource investigationsin the Western Bug catchment, and can provide a useful tool for furthereco-hydrologic research in the region (i.e. diffuse pollution impacts).
机译：这项研究的目的是评估生态水文SWAT模型（土壤和水评估工具，Arnold等，1998）在有限输入和校准数据下代表水平衡和硝酸盐通量的效用。被调查的流域位于乌克兰西部，面积约为2616 km 2 。土地使用目前以农业为主，牧场面积很大，自苏联解体以来，土地使用和农业实践发生了很大变化。模型应用程序产生了拟合的水平衡（校准： R 2 = 0.52，NS = 0.46;验证： R 2 = 0.47，NS = 0.51），并且在水流中硝酸盐的变化范围和动态似乎合理。地下水参数被高度敏感。结果表明，SWAT是西部Bug流域水资源调查的合适工具，并且可以为该地区的进一步生态水文学研究（即弥散性污染影响）提供有用的工具。

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